1.The simulator will automatically generate Normal ECG waveform when connect to power
2.The LED display will be off automatically if without operation after 5 seconds, press any key will be returned to display

Key Description:

There are 4 keys, followed by selection keys, increase key, reducing key, the Enter key, in addition to a set of key combinations

Select Key:

This key is used to select the parameter you want to change; there are 4 LED tubes to display the four codes represent what is displayed,
The 1st LED representative waveform code, LED 2-4 representatives the parameter (2 is the value of one hundred, 3 representatives of ten, 4 representatives of bits)